Diego Martínez may refer to:

Diego Martínez de Villamayor (died 1176), noble of the Kingdom of Castile Diego Martínez Barrio (1883–1962), Spanish politician Diego Martínez Torrón (born 1950), professor of Spanish literature Diego Martínez Belío (born 1977), Spanish lawyer and diplomat, secretary of state for foreign affairs

Association football Diego Martínez (footballer, born 1978), Argentine retired footballer and manager Diego Martínez (Paraguayan footballer, born 1980), Paraguayan footballer Diego Martínez (Spanish footballer, born 1980), Spanish footballer and football manager Diego Martínez (Mexican footballer, born 1981), Mexican footballer Diego Martínez (Uruguayan footballer, born 1981), Uruguayan footballer Diego Martínez (footballer, born February 1984), Spanish footballer and football manager Diego Martínez (footballer, born August 1984), Argentine footballer Diego Martínez (football manager) (born 1987), Ecuadorian football manager Diego Martínez (footballer, born 1988), Mexican footballer Dieguito (footballer, born 1989), Spanish footballer Diego Martínez (footballer, born 1992), Argentine footballer Diego Martínez (footballer, born 1993), Mexican footballer

See also